Exhibit 10.31 COLONY RIH HOLDINGS, INC. 2001 OMNIBUS STOCK INCENTIVE PLAN ALAN J. RIVIN STOCK OPTION AGREEMENT THIS STOCK OPTION AGREEMENT (this "Agreement"), dated as of the first day of October, 2001 (the "Effective Date"), by and between COLONY RIH...Rivin Stock Option Agreement • December 14th, 2001 • Colony Rih Acquisitions Inc • Services-amusement & recreation services • New York
